LI-COR LI-8100A Quick Start Manual

A Quick-Start Guide to
Survey Measurements

Survey System

LI-8100A

Contents

Part 1: First ThingsFir st
Part 2: Connect to iOSver sion8.4 .1and older
Part 3: Connect to anyi OSor Android OS Device
Part 4: Connect Auxiliary Sensors
Part 5: Set the Soil Collars
Part 6: The Measurement Cycle
Part 7: Survey Measurement Tutorial
Part 8: Transfer Data from the LI-8100A
Part 9: Process the Data

Part 1: First ThingsFirst

Do this the first time you power upthe system.

1. Install the computer software

The Windows® software is available from the LI-COR website:
www.licor.com/env/support. Search for LI-8100A.

2. Install a battery and power on the LI-8100A

Plug a chargedbat tery into either one oft heconnectors
in the LI-8100A. Thenpres sthe ON/OFF butto n.

3. Connect the RS-232 serial c able andUS B adapter

On yourPC, findthe seri alpor tnumber:
A.

Open the Device Manager: Presst heWi ndowskey (

Ctrl Alt

AlAlAlAlAlAlAlAlAlAlAlAlAlAlAlAlAltrl

rl

),

type Device Manager, andthen press Enter.

B.

Expand the entry called Ports( COM& LPT) .

C.

Look for USB Serial Port( COM#).

Your serial port number is indicated byt henumber.

4. Connect to the LI-8100A

After the Ready light turns on andthe pump starts running,
launch the LI-8100A PCso ftware and clickthe Connect button (

). Enter the Port #,then click Connect.

5. Turn off the pump (optional)

If you are annoyedby the pump, click Utilities> Manual Con­trols >Flow, then click 8100Flow Off.

6. Check the instrument's date and time

Click 8100> Date and Time. Sett heti met omat chyour time
zone.

Part 2: Connect toiOS version 8.4.1and older

You canuse the LI-8100APP for iOS devices that run iOSver­sions 8.4.1 and earlier if your LI-8100A has a Cisco®wi reless
card installed under the access panel. ForiOS version 9 and
newer, follow the instructions in Connect to anyiOS or
AndroidO SDe vice. Toenable wire less communication:

1

Connect to the LI-8100A, as described inFirst ThingsFirst.

2

In the computer software, click 8100> Networking...a ndset
the IP Addressa ndNetmas k:

IP Address: 192.168.100.101
Netmask: 255.255.255.0
Connection Type: Peer-to-Peer (ad hoc)
Network Name (SSID):Soil Network1
Channel: 1

Leave encryption unchecked.Cli ckSet to apply
the settings. Then restart the LI-8100A.

3

In iOS,go to Settings > Wi-Fia ndconnect to
Soil Network 1(named in the previous step).

4

Tap the network connection andtap Static .
Set the IPa ddressa ndSubnet mask:

IP Address: 192.168.100.100
Netmask: 255.255.255.0

5

Launch theLI-8 100APPand tap Connect to
Instrument.Tap New, then type in theLI-

8100A's IP address (192.168.100.101), and save
it.

6

Select the IP address andtap Connect.

If your mobile device is set toa utomatically join
the network, all you need todo toconnect is
select the instrument IPaddress and tap Connecti nthe future.

Part 3: Connect toany iOS or AndroidOS Device

You canuse the LI-8100APP on iOS andAndroi dOS devices if you
install a battery-powe redr outer int heLI-810 0A.Here we
describe how to configure the TP-LINKrouter ,inst all it, andcon­nect from a mobile device. Other brandsof battery-powered
routers are compatible, but these steps apply to the TP-LINK
TL-MR3040: http://www.tp-li nk.com/en/products/details/cat-

4691_TL-MR3040.html

NOTE: Always read all instruction guides andquick start guides
for router.

1

Install the charged battery in the router and power it on.V erify
that the power LED isgr eenor orangeand not blinking.

2

Position the mode switch on the sideo ft heTP-LINK to the pos­ition labeled WISP or 3G/4G.

3

Connect your computer to the router's network (besure your com­puter has a dynamicIP address, called Obtain an IP addressauto-
matically in Windows®):

Either connect an RJ-45 Ethernet cable between the router
and your computer,
Or, connect to thewi reless network. Thenet workname
(called SSID)and wirele sspassw ordar epri ntedunder the bat­tery cover of the TP-LINK.

4

Open a webbro wser andtype 192.16 8.0.1 inthe addressbar,
then press Enter.

5

Log in. Thedefault credentials are:

Username: Admin
Password: Admin

6

Click DHCP onthe left oft heset uppage. Note the IP Address
range of the DHCPser verand the Default Gatewa y.Typically
they are:

Start IPAddress: 192.168.0.100
End IPAddres s:192 .168.0.199
Default Gateway: 192.168.0. 1

7

If it is installed, remove the Cisco Systems wireless card that is
under the LI-8100A access panel.

8

Connect to the LI-8100A using these rial or USB connection, as
described in FirstThings First.

9

In the LI-8100A software, under 8100> Networking... configure
the wireless settings.

Set the LI-8100A IP addresss oit isident icalt ot heTP-LINK IP
address for the first three sets of numbers (as in, 192.168.0) and
outside the start and end range for the last set. So,

192.168.0.200 isa suitable IPaddress for the LI-8100A.

IP Address: 192.168.0.200
Netmask: 255.255.255.0 (this must be the same onthe router
and the LI-8100A)
Gateway: 192.168.0.1 (this must be the same onthe router
and the LI-8100A)
Connection Type: AccessPoint (infrastructure)

Leave encryption unchecked.Cli ckSet to apply the settings.

10

Restart the LI-8100A.

11

Connect the router to the Ethernet port on the CompactFlash
adapter under the access panel.

12

Connect your iOSor Android device to the network created by
the TP-LINK.The network name (called SSID)a ndwire less pass­word are printed under the battery cover of the TP-LINK.

13

Launch theLI-8 100APPand tap Connect to Instrument.

14

Tap New,type in the LI-8100A's IP address (192.168.0.200), and
save it.

15

Select the IP address andtap Connect.

Once the connectionis established, youmay proceed with your
measurements.

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Part 4: Connect AuxiliarySensors

For survey measurements, you'll typically uset heOmega Probe and Thet­aProbe to measure soil temperature and moisture. The EC-5 soil moisture
probe is described in the instruction manual.

1. Wire the sensors to the auxiliary sensor interface

Route the sensor cables through the glandplugs of the auxiliar ysensor
interface and connect it to the AUXSENSOR INTERFACEt erminal.

2. Omega Probe Configuration

In this example the Omegapr obeis connected to T1.

In the PCSof tware:

Click Setup >Chamber Meas­urement >(Ctrl +M) Ther­mocouples.

Select E for the OmegaProbe .

In the App:

Tap LI-8100A> Auxiliary Inputs,
the select the Thermocouple 1.

Select E for the OmegaProbe .

3. Decagon Devic es GS1 Configuration

In this example the ThetaProbe isconnecte dto V1.

In the PCSof tware:

Click Setup >Chamber Meas­urement >Port Setup, and select

the voltage input channel.

Select Soil MoistureP robeand
enter m (Slope) and b(O ffset)
from Table 1.

In the App:

Tap LI-8100A> Auxiliary Inputs,
then select the voltage input
channel.

Select SM and enter Slope and

Offset from Table 1.

Soil Type Slope Offset

Mineral 0.494 - 0.554
Soilless Media 0.591 - 0.661

Table 1.Coe fficients for mineral and organic soils.

You canal soper form soil-specific calibration to obtain lineari zationcoe f­ficients; refer tothe GS1 instruction manual for more informati on.

Part 5: Set the Soil Collars

Install soil collars 24 hours or more before making a meas­urement.
In hard orcompact edsoi lsyou may need to create a chan­nel around the collar with a trowel before insertion.
In soft soils, you canlay a piece of wood across the collar
and drive the collar with a mallet.
Do not install the collars too deeply—to avoid shearing
roots under the collar.
Collars should extend a minimum of 2 cmabove the soil
surface for survey chambers.
Measure the chamber offset. For survey measurements, it
is the distance between the soil surface and thet opof
the collar.

Soil

Collar

Chamber
Offset

Part 6: The Measurement Cycle

The measurement cycle starts with an optional Pre-purge
period with the chamberopen and gas flowing. At the
beginning of an Observation,t hechamber closes. Upon
closing, the Dead Bandstar tsa ndthe instrument begins
logging data. The Post-purge begins whent heobser-
vation is finished.

Observation

Chamber

Closes

Chamber

Open

Chamber

Opens

Post­purge

Data

Logged

Observation

Length

Dead
Band

Pre-purge
(optional)

Time

CO2 Concentration (µmol/mol)

Part 7: Survey MeasurementTutorial

Follow this tutorial to make a survey measurement. One
fully charged battery will provide about 2 to 3 hoursof
operation.

1. Install the soil coll ars

See Set theS oilCollars for more details.

2. Connect the chamber

The surveychambers have three tubes: AIR OUTis to the
chamber, AIR INi sret urningfr omt hechamber, and
BELLOWS isa irt hat drivest hebel lows.

3. Set up the measurement (part 1)

The following settings are recommendations. You should
experiment and post-process your data to determine the
best observation length, dead band, andpost purgeset­tings.

In the PCSof tware:

Click Setup >Chamber
Measurement >Port
Setup >O bservation:

Treatment Label:It will

be included inyour data
record.
Observation Length:90
to 120 seconds.

Dead Band:30 seconds.
Observation Count:1
Pre-purge: 0seconds.
Post-purge:1 0seconds.

In the App:

Tap Setup> Meas­urement Protocol:

Measurement Type:

Chamber
Obs. Length:90 to 120
seconds

Dead Band:30 seconds.
Obs. Count:1
Pre-Purge: 0 seconds.
Post-Purge: 10s econds.
AdditionalLog Fields: Set

to all.

4. Set up the measurement (part 2)

In the PCSof tware:

Click Setup >Chamber
Measurement >Port
Setup >Chamber:

Select your chamber.
Soil Area: 83.7 cm2for
the 10 cm chamber;31 7.8
cm2for the 20 cm cham­ber.
ChamberO ffset: Enter
the offset.

In the App:

Tap Setup> Area and
Volumes:

ChamberO ffset: Enter

the offset.
Soil Area: Selectt he10
cm or 20 cmcollar .
ChamberVolume: Select
your chamber.

5. Place the chamber over the collar

Gently set the chamber ont hecolla r.Inser tt hesoi lte m­perature and soil moisture probes at the desired depths
and distances from the chamber.

6. Start the measurement

In the PCSof tware:

Click Start Measurement:

Preset: Leave at Current
Setting.
Measurement File:Ente r

a file name and create a
new file.
Comments:Comme nts
are recorded in the file
header.
Destination: Either the
instrument memory or
the CompactFlash card.
Measurement Start:Set
to Start Immediately.

In the App:

Tap Start Measurement:

File Name:E nter aname.
Comments:Enter com-

ments.
ChamberO ffset: Enter
the offset.
Treatment Label:It will
be included inyour data
record.
Log To:Inst rument
memory or Com­pactFlash.
Start At: Start imme­diately
Repeat Meas.: 1.
Tap Start.

7. Check the data

In the PCSof tware:

Click View >Report.
Select a file, then click

Flux Computation.

In the App:

Tap Utilities >File Digest
View for either internal

or CompactFlash
memory.

Select a file and tap
Select.

Part 8: Transfer Data fromthe LI-8100A

Data files are stored in the LI-8100A memory, either in the
instrument storage or on a CompactFlash card int heinst ru­ment. You canal soej ectt heCompact Flashcard under the
access panel to copydata fromi t.

1. Connect the instrument toa computer

See FirstThings First.

2. Open the file transfer tool

In the LI-8100A PCso ftware, click Utilities> File Manager.
You will see a list of files and folders on yourPC andlists of
files stored in the LI-8100A internal memory and Com­pactFlash card.

3. Set the destination for the files

Under Local PC, select the folder where youw antt ost ore
the files.

4. Select the files that you wantto copy

Under Internal Storage or CompactFlash Card, select one or
multiple files using Shift + Click or Ctrl+ Click.

5. Transfer the data

Click Transfer toPC to move the files.

WARNING:Do not click Delete or Delete Allunle ssyou are

absolutely certain that you do not want theda ta. Deleted
files are not recoverable.

Part 9: Process theD ata

SoilFluxPro™ software (forme rlyFV8 100)i sa free
PC- and Mac-compatible application for analyzing
data from the LI-8100A. In SoilFluxPro, youcan
recompute data sets, graph data, analyze results,
and create .kml files for mapping georeferenced
measurements. SoilFluxPro is an essential part of
the LI-8100A system.

Get it from http://www.licor.-

com/env/products/soil_flux/softw are.html.